Science

Wednesday, 4 March 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Moon
The average time between new moons is 29 days, 12 hours, 44 minutes and 3 seconds. We call this period the synodic month.
It is longer than the sidereal month because in the process of illuminating the moon's disk, we must take into account the movement of the Moon itself, as well as the Earth and the Sun.
Cosmos
We are currently living in the fourth stage of the universe’s development.
It resembles the one 12.8 billion years ago and will continue to look like this for the next billions of years.
Graphene
Polish science contributed to the discovery and revolutionization of graphene production methods.
The key date is 2011 when the Institute of Electronic Materials Technology together with the Faculty ...
Liver
It is present in all vertebrates.
Mushrooms
They can be very expensive.
The most valuable mushrooms are the white truffles. For a 1.5 kg specimen was paid 330,000$.
Cosmos
About 4.6 billion years ago, a cloud of gas and dust existed at the site of the Solar System.
According to one theory, the balance of this cloud was upset by the explosion of a nearby supernova. ...
Snow
In 2008, there was a violent snowstorm in Afghanistan.
Temperatures there dropped to – 30 degrees Celsius, and up to 180 centimeters of snow fell in most o ...
Earth
Although it's hard to believe, the Earth's crust consists of 47 percent oxygen.
It is trapped in the soil in the form of various oxides, the most common of which are: silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, and iron oxide.
Cosmos
Light from the surface of the Sun to Earth travels about 8 minutes and 10 seconds.
This means that when we look at the Sun in the sky, we see it where it was more than 8 minutes ago.
Moon
The Moon always faces the Earth with the same side.
This is because our natural satellite is in synchronous rotation with the Earth. A long time ago, th ...